Question

The table below compares the radioactive decay rates of two materials.

Based on the table, which of these conclusions is most likely correct?
a. The half-life of Material 1 and Material 2 are equal.
b. The half-life of Material 2 is double the half life of Material 1.
c. The half-life of Material 2 is 1,910 years more than the half-life of Material 1.
d. The half-life of Material 1 is 1,910 years more than the half-life of Material 2.

Answer 1

Material Original mass of material (in grams) Mass of material after 11,460 years (in grams)
1 100 25
2 200 25

Answer 2

b. The half-life of Material 2 is double the half life of Material 1.
this was kind of confusing

Answer 3

but I'd go with B

Answer 4

sorry, it was confusing. but thank you very much!
@beccaboo333